Yes, and of two things happen –
if one is a monster, the other gets tortured – either until they kill a part of themselves so they can live with it, or get divorced.
if both are well meaning good messed up people – THEN they get therapy. much more expensive, complicated and sometimes they still get divorced. especially if they get an idiotic therapist.
sometimes you get a second chance. sometimes you don’t.
and a second successful marriage? happens. sometimes. not too often, though.